S.D. Codified Laws § 21-35-28
Current with legislation signed by the governor on or before 3/6/2024
If any person who is a proper party defendant or any affected property is omitted from the declaration of taking filed pursuant to § 21-35-24, the plaintiff may file amendments to include them. The amendments from the time of filing have the same force and effect as if they were included in the original proceedings. The naming or omission of defendants' names does not defer the effect of the declaration of taking.
SDCL 21-35-28